Schott SF 5, 365nm - 2325nm
USER
2 1
SQRT(1+B1*wvl^2/(wvl^2-C1)+B2*wvl^2/(wvl^2-C2)+B3*wvl^2/(wvl^2-C3))
0
B1	1.46141885E+00;
B2	2.47713019E-01;
B3	9.49995832E-01;
C1	1.11826126E-02;
C2	5.08594669E-02;
C3	1.12041888E+02;